I thought this rotating house was impossible.

Summary by Krater

A tour of a rotating circular house near San Diego, California, examining its plumbing, rotation mechanism, and the clever slip-ring engineering that allows utilities to pass through the rotating floor.

From the video

Answers: How does a rotating house work and how are its utilities connected?

• rotating house architecture
• rotational plumbing and slip rings
• home engineering and design
• inventing a rotating home

What it concludes

• The rotating house uses a 1.5-horsepower motor and a 25-to-1 reduction transmission with a 71-to-1 torque hub to drive its 216-inch diameter wheels, allowing the entire house to turn in 45 minutes.
• A custom-designed slip-ring with grooved rings and multiple seals for sewer, grey water, drinking water, and gas successfully separates fluids and prevents leaks for up to 75 years.
• The homeowners decided to sell the house and move back to Coronado because managing such a complex custom home alone became impractical given the owner's health issues.